On 03/07/2019 15:37, Chris Wilson wrote:
Expose whether or not we support the PMU software tracking in our scheduler capabilities, so userspace can query at runtime. v2: Use I915_SCHEDULER_CAP_ENGINE_BUSY_STATS for a less ambiguous capability name. Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx> --- For reference, Tvrtko suggested an alternative back in Feb, "I am leaning towards thinking PMU is a backend and not the scheduler feature. We could export it via engine discovery for instance." -Chris --- drivers/gpu/drm/i915/gt/intel_engine_cs.c | 7 ++++--- drivers/gpu/drm/i915/i915_pmu.c | 4 +--- include/uapi/drm/i915_drm.h | 1 + 3 files changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c index c1fb5fa3952e..7d6d6e62e9cc 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c @@ -688,9 +688,10 @@ void intel_engines_set_scheduler_caps(struct drm_i915_private *i915) u8 engine; u8 sched; } map[] = { -#define MAP(x, y) { ilog2(I915_ENGINE_HAS_##x), ilog2(I915_SCHEDULER_CAP_##y) } - MAP(PREEMPTION, PREEMPTION), - MAP(SEMAPHORES, SEMAPHORES), +#define MAP(x, y) { ilog2(I915_ENGINE_##x), ilog2(I915_SCHEDULER_CAP_##y) } + MAP(HAS_PREEMPTION, PREEMPTION), + MAP(HAS_SEMAPHORES, SEMAPHORES), + MAP(SUPPORTS_STATS, ENGINE_BUSY_STATS), #undef MAP }; struct intel_engine_cs *engine; diff --git a/drivers/gpu/drm/i915/i915_pmu.c b/drivers/gpu/drm/i915/i915_pmu.c index 8fe46ee920a0..eff86483bec0 100644 --- a/drivers/gpu/drm/i915/i915_pmu.c +++ b/drivers/gpu/drm/i915/i915_pmu.c @@ -102,10 +102,8 @@ static bool pmu_needs_timer(struct drm_i915_private *i915, bool gpu_active) /* * Also there is software busyness tracking available we do not * need the timer for I915_SAMPLE_BUSY counter. - * - * Use RCS as proxy for all engines. */ - else if (intel_engine_supports_stats(i915->engine[RCS0])) + else if (i915->caps.scheduler & I915_SCHEDULER_CAP_ENGINE_BUSY_STATS) enable &= ~BIT(I915_SAMPLE_BUSY);/*diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h index 328d05e77d9f..469dc512cca3 100644 --- a/include/uapi/drm/i915_drm.h +++ b/include/uapi/drm/i915_drm.h @@ -521,6 +521,7 @@ typedef struct drm_i915_irq_wait { #define I915_SCHEDULER_CAP_PRIORITY (1ul << 1) #define I915_SCHEDULER_CAP_PREEMPTION (1ul << 2) #define I915_SCHEDULER_CAP_SEMAPHORES (1ul << 3) +#define I915_SCHEDULER_CAP_ENGINE_BUSY_STATS (1ul << 4)#define I915_PARAM_HUC_STATUS 42
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx> Regards, Tvrtko _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
